National Ignition Campaign Hohlraum energetics

被引：117

作者：

Meezan, N. B. ^{[1
]}

Atherton, L. J. ^{[1
]}

Callahan, D. A. ^{[1
]}

Dewald, E. L. ^{[1
]}

Dixit, S. ^{[1
]}

Dzenitis, E. G. ^{[1
]}

Edwards, M. J. ^{[1
]}

Haynam, C. A. ^{[1
]}

Hinkel, D. E. ^{[1
]}

Jones, O. S. ^{[1
]}

Landen, O. ^{[1
]}

London, R. A. ^{[1
]}

Michel, P. A. ^{[1
]}

Moody, J. D. ^{[1
]}

Milovich, J. L. ^{[1
]}

Schneider, M. B. ^{[1
]}

Thomas, C. A. ^{[1
]}

Town, R. P. J. ^{[1
]}

Warrick, A. L. ^{[1
]}

Weber, S. V. ^{[1
]}

Widmann, K. ^{[1
]}

Glenzer, S. H. ^{[1
]}

Suter, L. J. ^{[1
]}

MacGowan, B. J. ^{[1
]}

Kline, J. L. ^{[2
]}

Kyrala, G. A. ^{[2
]}

Nikroo, A. ^{[3
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[3] Gen Atom Co, San Diego, CA 93286 USA

来源：

PHYSICS OF PLASMAS | 2010年 / 17卷 / 05期

关键词：

plasma production by laser; INERTIAL CONFINEMENT FUSION; PHYSICS BASIS; SIMULATIONS; TARGETS; DESIGN;

D O I：

10.1063/1.3354110

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The first series of experiments of the National Ignition Facility (NIF) [E. I. Moses , Phys. Plasmas 16, 041006 (2009)] tested ignition Hohlraum "energetics," a term described by four broad goals: (1) measurement of laser absorption by the Hohlraum; (2) measurement of the x-ray radiation flux (T-RAD(4)) on the surrogate ignition capsule; (3) quantitative understanding of the laser absorption and resultant x-ray flux; and (4) determining whether initial Hohlraum performance is consistent with requirements for ignition. This paper summarizes the status of NIF Hohlraum energetics experiments. The Hohlraum targets and experimental design are described, as well as the results of the initial experiments. The data demonstrate low backscattered energy (< 10%) for Hohlraums filled with helium gas. A discussion of our current understanding of NIF Hohlraum x-ray drive follows, including an overview of the computational tools, i.e., radiation-hydrodynamics codes that have been used to design the Hohlraums. The performance of the codes is compared to x-ray drive and capsule implosion data from the first NIF experiments. These results bode well for future NIF ignition Hohlraum experiments. (C) 2010 American Institute of Physics. [doi:10.1063/1.3354110]

引用

页数：8

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